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-rw-r--r--src/rt/rust_sched_loop.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/rt/rust_sched_loop.cpp b/src/rt/rust_sched_loop.cpp
index ce549db5236..d494fa487cf 100644
--- a/src/rt/rust_sched_loop.cpp
+++ b/src/rt/rust_sched_loop.cpp
@@ -108,6 +108,8 @@ rust_sched_loop::number_of_live_tasks() {
  */
 void
 rust_sched_loop::reap_dead_tasks() {
+    lock.must_have_lock();
+
     if (dead_task == NULL) {
         return;
     }